MATLAB: How to tabulate this results using fprintf

figuretable

clc
clear all
close all
f=@(x)    ((x^3)-x-3)
Ea=100 
i=0
xl=0
xu=3
fl=f(xl);
fu=f(xu);
display('i     xl      xu     f(xl)     f(xu)     xr     f(xr)     Ea')
while Ea > 10^-3
    
    xr=(xl+xu)/2
    fr=f(xr)
    
    if fl*fr>0
        Ea=abs((xl-xr)/xl*100);
        xl=xr
        fprintf('%2.0f %12.5f %12.5f %12.5f %12.5f\n' ...
               , i + 1, xl, xu, fl, fu, xr, fr,  Ea);
    else
        Ea=abs((xu-xr)/xu*100);
        xu=xr
    end
    
    i=i+1
    fxr(i) = fr;
    Eav(i) = Ea;
    iv(i) = i;
end
figure
plot(iv,Eav,'-o')
xlabel('i');
ylabel('|Ea|');
title('|Ea| versus i');
figure
plot(iv,fxr,'-o')
xlabel('i');
ylabel('fxr');
title('fxr versus i');

Best Answer

You only have 5 format fields in your fprintf call.
Try this (with all 8): 
fprintf('%2.0f %12.5f %12.5f %12.5f %12.5f %12.5f %12.5f %12.5f\n', i + 1, xl, xu, fl, fu, xr, fr,  Ea);
Experiment to get the result you want.
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